Springer Science and Business Media LLC
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Fluid chemistry and processes at the Porgera gold deposit, Papua New Guinea
Springer Science and Business Media LLC - Tập 32 - Trang 119-132 - 1997
The Porgera gold deposit in Papua New Guinea is a world-class example of an alkalic-type epithermal gold system (stage II), which overprints a precursor stage of magmatic-hydrothermal gold mineralization (stage I). Gas and ion chromatographic analyses of fluid inclusions contained in vein minerals from both mineralization stages have been carried out in order to constrain the compositions of the ......
Multimillion year thermal history of a porphyry copper deposit: application of U–Pb, 40Ar/39Ar and (U–Th)/He chronometers, Bajo de la Alumbrera copper–gold deposit, Argentina
Springer Science and Business Media LLC - Tập 43 - Trang 295-314 - 2007
Application of multiple chronometers (including U–Pb and 40Ar/39Ar geochronology and zircon and apatite (U–Th)/He thermochronology) to porphyry intrusions at the Bajo de la Alumbrera porphyry copper–gold deposit, Argentina, reveals a complex history of reheating that spans millions of years. Previous U–Pb geochronology, combined with our new 40Ar/39Ar data, shows that the multiple porphyritic intr......
Diagenetic processes and the mineralization in the triassic of Central England
Springer Science and Business Media LLC - Tập 18 - Trang 365-377 - 1983
Continental red beds are the host rocks of a characteristic style of mineralization which suggests a genetic link between red bed formation and ore formation. Samples of unmineralized and mineralized Triassic sediments from Central England have been studied sedimentologically, petrographically and geochemically with the aim of clarifying this link which may provide valuable guides for exploration.......
Discussion on the paper of P. Möller et al.: Geochemical proximity indicators of massive sulfide mineralization in the Iberian Pyrite Belt and the East Pontic Metallotect
Springer Science and Business Media LLC - Tập 20 - Trang 66-66 - 1985
Great Barrier Island silver-gold deposits, Hauraki Province, New Zealand
Springer Science and Business Media LLC - Tập 9 - Trang 143-153 - 1974
The Great Barrier Island subvolcanic silver-gold deposits comprise a number of essentially east striking, quartz filled, mineralized fissures, which transect andesitic volcanics and an unconformably overlying, bedded sinter deposit of upper Tertiary to Quaternary age. Wall rock alteration is characterized by a propylitic assemblage in the least altered andesite, with argillic assemblages and silic......
Sm–Nd and Sr isotope systematics of scheelite from the giant Au(–W) deposit Muruntau (Uzbekistan): implications for the age and sources of Au mineralization
Springer Science and Business Media LLC - Tập 36 - Trang 379-392 - 2001
The application of the Sm–Nd isotope system of scheelite to dating of low-sulfide, quartz-vein hosted Au mineralization is still under discussion. In the present work, new Sm–Nd and Rb–Sr data for scheelite from the giant Muruntau/Myutenbai Au deposit (Kyzylkum, Western Uzbekistan) are discussed. Based on the geological relationship, mineralogical properties, and trace element characteristics, tw......
The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, U–Pb age and Ta mineralization
Springer Science and Business Media LLC - Tập 44 - Trang 723-750 - 2009
The Kenticha rare-element pegmatite, a globally important tantalite source in the Neoproterozoic Adola Belt of southern Ethiopia, is a highly fractionated, huge (2,000 m long and up to 100 m thick), subhorizontal, sheet-like body, discordantly emplaced in ultramafic host rock. It corresponds to the spodumene subtype of the rare-element pegmatite class and belongs to the lithium–cesium–tantalum pet......
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